⚠
warning HP
Error Code Cartridge is very low
Toner cartridge level is critically low — cartridge is nearly empty.
? What Causes This
Cartridge toner has been heavily depleted through extended use.
✓ How to Fix It
Replace the cartridge with a new one to continue printing.
Source: page 8 of the official manual
From the manual
This error code appears in:
HP Color Laserjet Pro M255 M256 Printer